Review on TASOGEN 12 Pack Mini Digital Thermometer Hygrometer - Indoor Temperature and Humidity Gauge Meter Monitor (℉) for Humidor, Greenhouse, Reptile Tank, Home, Jars by Jason Peterson

They work very well and are pretty accurate if you let them sit for a while. I took this photo about an hour after opening. I've been using them for a few weeks now and they do a great job when in a container or in a small space. I have tested them on two of my other hygrometers that I use and know they are correct. I suggest letting them sit for a while, then removing the batteries and starting again. Once I did that, they all lined up and went exactly where they were supposed to. I've used Bovada 62% and they all worked well and stayed in place. In addition, all time indicators are read on site. Overall I would say I received an excellent backpack that was value for money. Would buy them again and recommend them anytime.